一、环境安装
create by wjl in 20160824
1、
    npm install babel -g
    npm install webpack -g
    npm install webpack-dev-server -g
2、
    创建文件目录 your project name
    npm init

3、
    npm install react --save-dev
    npm install react-dom --save-dev
    npm install webpack --save-dev
    npm install webpack-dev-server --save-dev
    npm install babel-core --save-dev
    npm install babel-loader --save-dev
    npm install babel-preset-react --save-dev
    npm install babel-preset-es2015 --save-dev

4、
    webpack.config.js

5、
    打开 package.json
    替换 test" "echo \"Error: no test specified\" && exit 1"
    为   "start": "webpack-dev-server --hot"

6、 运行npm start

装完这堆东西如果不能热启动需要重启电脑尝试

7、react-router参考

http://react-guide.github.io/react-router-cn/docs/Introduction.html